9902.02.42 - (2S)-2-[(Allyloxy)methyl]oxirane (CAS No. 106-92-3) (provided for in subheading 2910.90.91)

This HTS code, 9902.02.42, designates (2S)-2-[(Allyloxy)methyl]oxirane (CAS No. 106-92-3) for temporary importation under specific trade agreement legislation or pursuant to Section 22 of the Agricultural Adjustment Act. This temporary classification provision is distinct from the standard tariff classifications for chemicals, such as those found in Chapter 29, where this substance would otherwise be classified under subheading 2910.90.91. The purpose of this Chapter 99 classification is to control or monitor the importation of this particular chemical under a specific policy or agreement, rather than to assign a permanent tariff rate.

As a leaf node within Chapter 99, this entry does not have further subdivisions. Its significance lies in its temporary nature and the specific conditions or limitations that may apply to its importation as dictated by the proclamation under which it is provided. Unlike the broad categories found in the earlier chapters of the HTS (e.g., live animals in Chapter 1), this HTS code addresses a very specific chemical compound subject to special regulatory treatment, highlighting the role of Chapter 99 in managing imports beyond routine tariff assessment.